Finding the Fourth Proportional to 2,118,147.50, 2,921,031.87 and 1,393,610.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118,147.50 : 2,921,031.87 = 1,393,610.06 : x
2. Step 2: Convert to fraction form
   2,118,147.50/2,921,031.87 = 1,393,610.06/x
3. Step 3: Cross multiply
   2,118,147.50x = 2,921,031.87 × 1,393,610.06
4. Step 4: Simplify right side
   2,118,147.50x = 4,070,779,399,612.61
5. Step 5: Solve for x
   x = 4,070,779,399,612.61/2,118,147.50
6. Step 6: Final answer
   x = 1,921,858.32